GE Refrigerator Error Code F708

F708 means the COM module installed in the refrigerator is running a firmware version that is not compatible with the ACM (appliance control module). These two boards must operate on matching or mutually supported versions in order to communicate correctly. When the system detects this mismatch during its internal handshake process, it logs F708. Resolving it requires confirming the version of each board and replacing or updating the incompatible one.

A reset will not clear the F708 error if a genuine version incompatibility exists between the COM module and the ACM. Because the conflict is based on the firmware versions physically present in each board, the error will return as soon as the refrigerator runs its startup communication check. The underlying mismatch must be corrected before the code will go away.

Repair costs depend on which board needs to be replaced. A replacement COM module or ACM for a GE refrigerator typically ranges from around $75 to $250 or more for the part alone, depending on the model. Adding professional labor, the total repair cost generally falls somewhere between $150 and $400. Getting a diagnosis first helps confirm which specific component is causing the incompatibility before purchasing parts.

This error generally requires comparing the firmware or hardware revision labels on both the COM module and the ACM, which involves accessing internal components. Unless you are comfortable working with refrigerator control boards and can source the correct compatible part, a qualified appliance technician is the safer option. Ordering the wrong replacement board can result in the same incompatibility error recurring.

F708 is a communication compatibility fault rather than a safety-critical warning like an overtemperature or electrical fault. However, the incompatibility between the COM module and ACM can limit or disable features that depend on inter-board communication, which may affect temperature regulation or other functions. It is best to address the error promptly to ensure the refrigerator is operating fully and correctly.